Crossdrilled or Not?

[Big Baller]

The original purpose of crossdrilling rotors was to help release the gases emitted from the asbestos brake pads during braking. Any object with more surface area is going to cool faster, those holes are no differant than the principal behind a heat sink. Besides they look better too As for grooved rotors...the caliper is an OEM rear from Porsche so the pads are dirt cheap.

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I've been putting together a custom brake setup, the rotors will be ordered through AP Racing...it's not the typical one piece steel rotor, it's basically an outer ring bolted to an aluminum rotor hat/bell. It's actually the same rear rotor from a Modified circle track car...

1 Find me proof that cross drilled rotors cool better. When you drill a rotor you lose mass, that mass is what absorbs and dissipates heat from the brake system. Taking mass out of the rotors isn't going to make them work better.

2 If you are going to the track you shouldn't be worried about how they look.

3. Have you done any track days? Regardless of how cheap the pads are you don't want to have to change them at the track if you can avoid it. Keep in mind that you wont be using stock pads at the track you will probably be on something similar to a Hawk hp + or Hp 1 and those aren't cheap.

4. Check out Coleman Racing they generally have better prices on blank rotors. They will also custom machine hats for you if need be. I have a very similar setup on my 240 track car. I ended up with slotted rotors because at the time that's all they had. Ill post up some of the links I have and you can decide for your self if you really want drilled rotors.




2. How do you know that you want your rotors to cool better.( what you actually want is for your rotors to stay in a certain temperature range so that they work effectively.